Dirt-tank cleaner



Dec. 8,1925. v

. o. G. AHRENs mm TANK CLEANER Filed sept. 2o. 1922 Patented Dec. 8, 1925. v

UNITED STATES PATENT OFFICE.

DIRT-TANK CLEANER,

Application filed September 20, 1922. Serial No. 589,382.

To aZZ whom it may concerni' Be it known that I. O'rro G. AHRENS, a lcitizen of the United States` residing in the city of Karnes and State of Texas, have 6 invented new and useful Improvements in Dirt-Tank 'C1eaners, of which the following is a specification7 reference being had to the accompanying drawings.

This invention is in the way of a dirt tank cleaner, or dirt remover, 'and the vobject is to provide a simple and practical machine V for removing dirt from the bottom of tanks -co'ntaining water` or for transferring mud from one side of a dam to the other side,

or for digging irrigation ditches throughR fields, andfor similar purposes.

In the drawmg-v Flgure 1 is a side elevatl'on of the device mounted for use in removing` dirt from a.

vtank of water;

Figure 2 is a top or plan view, a section of the pipe being removed to show the worm within.

The invention consists' in providing a '25 pipe 1 of suitable length to reach -at lan angle from the top to the bottomI of the tank 2. A worm 3 is then extended through thispipe and adapted to turn freely therein. Another worm 4 is connected by a universal joint ,5 to theend of the worm 3, Vand the worm 4 is then extended out across the bottom of the tank 2 and-remains uninclosefl. The extreme end of the worm 4 is turned down and journaled in a support- `to receive the m'ud and direct it as. de-

ing leg 6 to which wires 7 are attached and extended oppositely outside the tank. A drive shaft 15- is journaled at 8 in supporting legs 9 which stand outside the tank 2, and the outei` end of the worm 3 is connected to this shaft by a universal joint 10. The shaft 15 is driven by an engine 11 and belt 12 passing over the pulley 13 on the shaft. A metal chute 14 is provided sired. 1 K 451 In use the worm 4 may be pulled from side to 'sideat the bottom of the tank 2 and this worm 4 draws the mud into the pipe 1 vwhere th'e worm 3 catches it, and force's it up 'and out of the tank.

While I have herein described al certain specific method of constructing-and assembling the elements of my invention, it is understood same`may be varied in minor details, not departing from the spirit of my invention as defined in the appended claim.

I claim:

A device for removing dirt from tanks, comprising a pipe extended down into the stank; a worm in the pipe; a second worm universally'connected to` the pipeworm and disposed at the bottom of the tank; aV bearing -for the free end of the said second worm; wires attached to said bearing and 05 extended outside the tank; and means for rotating the said pipe worm.

' OTTO G. AHRENS. 

